Fiddler - Fiddler is a debugging program for websites.
Kitemaker - A fast issue tracker for makers and innovators
Proxyman.io - Proxyman is a high-performance macOS app, which enables developers to view HTTP/HTTPS requests from apps and domains.
GitKraken Glo Boards - Easily track tasks and issues from inside popular dev tools
HTTP Toolkit - Beautiful, cross-platform & open-source tools to debug, test & build with HTTP(S). One-click setup for browsers, servers, Android, CLI tools, scripts and more.
Refined GitHub - Browser extension that makes GitHub cleaner & more powerful